Steps
Do Not plug in the header before boot.
After Boot and go into OS, plug in header
Open Digipower CNTRL (install from CD)

you can set load line, Switching Freq, OCP, it will be set with the CPU's vcore, so suggest set LL Extreme, Switching Freq 500 to 800, disable OCP (this will also be used for the VGA Vcore)
If you also wanna adjust vcore of VGA, u can open up Turbo V and adjust the CPU Vcore together with the VGA vcore. Set CPU Vcore to manual mode and a fixed voltage. VGA vcore will be 100mv more than what you set on the CPU. For eg, 1.30 will give 1.40 on VGA.
After adjust and ready to bench remove header. Settings hould be kept even at reset unless you shutdown.

Do not have the header plugged in at boot as it will make the system stop booting.Enjoy.

ya as said plug in header of vga1 apply changes, remove plug in 2, apply remove etc
obviously if you want a different setting for cpu, (flip over slow mode if vcore to be set is too low) apply changes for4 both cpu and vga first with header in , then remove vga header and adjust and apply for cpu alone.